ArticleMaterials (Basel, Switzerland)2019
Photocatalytic and Pozzolanic Properties of Nano-SiO₂/Al₂O₃-TiO₂ Powder for Functional Mortar.
Article in Materials (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Microstructure Analysis and Mechanical Properties of Backfill Material Using Stone Sludge.Materials (Basel, Switzerland) · 2023Article
- Evaluation of Reducing NO and SOMaterials (Basel, Switzerland) · 2021Article
- Experimental Study on Damage Identification of Nano-SiOSensors (Basel, Switzerland) · 2020Article
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Authors and funding
5 authors.
Funding
Abstract
The present study intended to find a way to use TiO₂, one of the most widely used photocatalysts, as a construction material. To that end, nano-SiO₂/Al₂O₃-TiO₂ powder (NTCP) was synthesized by coating SiO₂ and Al₂O₃ support materials with TiO₂. The NTCP was anatase phase spherical particles, specific surface areas were 319 m²/g and 267 m²/g for the SiO₂-TiO₂ powder and Al₂O₃-TiO₂ powder. UV absorption test results showed the developed NTCP had a light absorption peak at wavelengths of 380 nm or below, and its absorbance was much larger than that of commercial TiO₂. The NTCP formed smaller pores on the surface than commercial TiO₂. As a result, the flow of the mortar decreased as the adsorption strength increased and combined a large number of water molecules. In addition, the Pozzolanic reaction by SiO₂ and Al₂O₃ used as support materials produced many calcium silicate hydrate (C-S-H) and calcium aluminate hydrate (C-A-H). This has shown an increased strength of mortar mixed with the NTCP by promoting a nucleation effect and reducing the filling effect and the number of harmful holes in the mortar.
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